<template>
  <el-form ref="deptForm" label-width="120px" :model="form" :rules="rules">
    <el-form-item label="部门名称" prop="name">
      <el-input v-model="form.name" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门编码" prop="code">
      <el-input v-model="form.code" style="width:80%" placeholder="1-50个字符" />
    </el-form-item>
    <el-form-item label="部门负责人" prop="manager">
      <el-select v-model="form.manager" style="width:80%" placeholder="请选择">
        <el-option
          v-for="item in list"
          :key="item.id"
          :value="item.username"
          :label="item.username"
        />
      </el-select>
    </el-form-item>
    <el-form-item label="部门介绍" prop="introduce">
      <el-input v-model="form.introduce" style="width:80%" placeholder="1-300个字符" type="textarea" :rows="3" />
    </el-form-item>
    <el-form-item>
      <el-button type="primary" size="small" @click="hSubmit">确定</el-button>
      <el-button size="small" @click="hCancel">取消</el-button>
    </el-form-item>
  </el-form>
</template>

<script>
import { getEmployeesSimple, getDepartmentsDetail, editDepartments } from '@/api/department'
import { addDepartments } from '@/api/department'
export default {
  props: {
    id: {
      required: true,
      type: String
    },
    isEdit: {
      required: true,
      type: Boolean
    },
    originList: {
      type: Array,
      required: true
    }
  },
  data() {
    // 自定义检验规则函数
    const existCodeValid = (rule, value, callback) => {
      // 验证输入的编码value在所在的部门中是否存在
      let existCodeList = this.originList.map(item => item.code)
      // 确定是否是编辑状态
      if (this.isEdit) {
        existCodeList = this.originList.filter(item => item.id !== this.id).map(item => item.code)
      }
      console.log(existCodeList, 'existCodeList')
      if (existCodeList.includes(value)) {
        // 存在 检验失败
        callback(new Error(`部门编码:${value}已存在`))
      } else {
        // 不存在相同的编码,放行
        callback()
      }
    }
    const existNameValid = (rule, value, callback) => {
      // 验证输入的部门名称value同级不能存在
      let exitNameList = this.originList.filter(item => item.pid === this.id).map(item => item.name)
      //  确定是否是编辑状态
      if (this.isEdit) {
        const pid = this.originList.find(item => item.id === this.id).pid // 根据this.id获取当前对象的pid
        const brothers = this.originList.filter(item => item.pid === pid) // 找到所有的兄弟包括自己
        exitNameList = brothers.filter(item => item.id !== this.id).map(item => item.name)
      }
      if (exitNameList.includes(value)) {
        callback(new Error(`部门名称:${value}已存在`))
      } else {
        callback()
      }
    }

    return {
      // 表单收集对象
      form: {
        name: '',
        code: '',
        manager: '',
        introduce: ''
      },
      rules: {
        name: [
          { required: true, message: '部门名称不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门名称要求1-50个字符', trigger: 'blur' },
          { validator: existNameValid, trigger: 'blur' }
        ],
        code: [
          { required: true, message: '部门编码不能为空', trigger: 'blur' },
          { min: 1, max: 50, message: '部门编码要求1-50个字符', trigger: 'blur' },
          { validator: existCodeValid, trigger: 'blur' }
        ],
        manager: [
          { required: true, message: '部门负责人不能为空', trigger: ['blur', 'change'] }
        ],
        introduce: [
          { required: true, message: '部门介绍不能为空', trigger: 'blur' },
          { min: 1, max: 300, message: '部门介绍要求1-300个字符', trigger: 'blur' }
        ]
      },
      list: []
    }
  },
  // 解决数据不更新的方式3 开启监听器,监听id的变化,
  // 一旦变化就调用loadDepartmentDetail重新获取数据详情
  // watch: {
  //   id: function(new_value, old_value) {
  //     this.loadDepartmentDetail()
  //   }
  //   // 立即加载
  //   // immediate: true
  // },
  created() {
    this.loadEmployeesSimple()
    // 如果是编辑页面的话,才需要获取部门详情数据进行回填
    if (this.isEdit) {
      this.loadDepartmentDetail()
    }
  },
  methods: {
    //  清空表单
    resetForm() {
      this.$refs.deptForm.resetFields()
    },
    // 加载部门详情数据
    async loadDepartmentDetail() {
      try {
        const res = await getDepartmentsDetail(this.id)
        // 将获取的数据添加到表单
        this.form = res.data
      } catch (error) {
        console.log(error)
      }
    },
    async loadEmployeesSimple() {
      try {
        const res = await getEmployeesSimple()
        console.log(res)
        this.list = res.data
      } catch (error) {
        console.log(error)
      }
    },
    async  doAdd() {
      try {
        // this.form 参数缺少一个 pid 如何解决?
        await addDepartments({ ...this.form, pid: this.id })
        // 关闭弹窗  刷新页面
        // 弹窗在父组件 子传父
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    async  doEdit() {
    //  编辑
      try {
        // this.form 参数缺少一个 pid 如何解决?
        await editDepartments(this.form)
        // 关闭弹窗  刷新页面
        // 弹窗在父组件 子传父
        this.$emit('success')
      } catch (error) {
        console.log(error)
      }
    },
    hCancel() {
      this.$emit('close')
    },
    hSubmit() {
      // 兜底校验
      this.$refs.deptForm.validate((valid) => {
        // 校验失败
        if (!valid) return
        // 校验通过
        this.isEdit ? this.doEdit() : this.doAdd()
      })
    }
  }

}
</script>
